<template>
	<view>
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<!-- 左侧滑动 -->
			<scroll-view scroll-y="true"  :style="{height:wh+'px'}" class="left-scroll-view">
				<block v-for="(item1,index1) in cateList" :key="index1" >
					<view :class="['left-scroll-view-item',index1===active?'active':'']" @click="activechange(index1)">{{item1.cat_name}}</view>
				</block>
			</scroll-view>
			<!-- 右侧滑动 -->
			<scroll-view scroll-y="true" :style="{height:wh+'px'}" class="right-scroll-view" :scroll-top="scrollTop">
				<view class="" v-for="(item2,index2) in cateLevel2" :key="index2" >
					<view class="cate-lv2-title">/{{item2.cat_name}}/</view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,index3) in item2.children" :key="index3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon" mode="" ></image>
							<text class="">{{item3.cat_name}}</text>
						</view>
					</view>
						
					</view>
				
			</scroll-view>
		</view>
	</view>
</template>
<script>
	import badegMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badegMix],
		data() {
			return {
				
				//当前设备可用高度 
				wh:0,
				cateList:[],
				active:0,
				cateLevel2:[],
				scrollTop:0
			};
		},
		onLoad(){
			const sysInfo = uni.getSystemInfoSync()
			this.wh=sysInfo.windowHeight
			this.getcateList()
		},
		methods:{
			async getcateList(){
				const {data:res} = await uni.$http.get('/api/public/v1/categories')
				console.log(res)
				if(res.meta.status!==200) return uni.$showMsg
				this.cateLevel2=res.message[0].children
				this.cateList=res.message
			},
				
			activechange(i){
				this.active=i
				this.cateLevel2=this.cateList[i].children
				this.scrollTop=this.scrollTop===0?1:0
			},
			gotoGoodsList(item3){
				uni.navigateTo({
					url:'/subpkg/goods-list/goods-list?cid=' + item3.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
			
			
		}
	}
</script>

<style lang="scss">

.scroll-view-container{
	display: flex;
	
	.left-scroll-view{
		width: 120px;
		
		.left-scroll-view-item{
			background-color: #f7f7f7;
			line-height: 60px;
			text-align:center;
			font-size: 12px;
			
			&.active{
				background-color: #ffffff;
				position: relative;
				&::before{
					content: ' ';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #c00000;
					position: absolute;
					left: 0;
					top: 50%;
					transform:translateY(-50%)
				}
			}
		}
	}
		
	.cate-lv2-title{
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}
		
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
			
		.cate-lv3-item{
				width:33%;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				margin-bottom: 10px;
			image{
				width: 60px;
				height: 60px;
			}
			text{
				font-size: 12px;
			}
		}
	}
}
</style>